Thanks to something Doug said when I first opened this discussion, I
went back and looked at my implementation. He said, "Can't we just do
this in getFieldQuery?". Figuring that he probably knew what he was
talking about, I looked a bit harder, and it turns out he was right.
Here's a much simpler version of NewMultiFieldQueryParser that seems
to work.
[For those just tuning in, this is a version of MultiFieldQueryParser
that will work with a default query operator of AND, as well as with
OR.]
Enjoy!
Bill
class NewMultiFieldQueryParser extends QueryParser {
static private final String DEFAULT_FIELD = "%%";
protected String[] fieldnames = null;
private Analyzer analyzer = null;
public NewMultiFieldQueryParser (Analyzer a) {
super(DEFAULT_FIELD, a);
}
public NewMultiFieldQueryParser (String[] f, Analyzer a) {
super(DEFAULT_FIELD, a);
fieldnames = f;
analyzer = a;
}
public void setFieldNames (String[] f) {
fieldnames = f;
}
protected Query getFieldQuery (String field,
Analyzer a,
String queryText)
throws ParseException {
Query x = super.getFieldQuery(field, a, queryText);
if (field == DEFAULT_FIELD && (fieldnames != null)) {
BooleanQuery q2 = new BooleanQuery();
if (x instanceof PhraseQuery) {
Term[] terms = ((PhraseQuery)x).getTerms();
for (int i = 0; i < fieldnames.length; i++) {
PhraseQuery q3 = new PhraseQuery();
q3.setSlop(((PhraseQuery)x).getSlop());
for (int j = 0; j < terms.length; j++) {
q3.add(new Term(fieldnames[i], terms[j].text()));
}
q2.add(q3, false, false);
}
} else if (x instanceof TermQuery) {
String text = ((TermQuery)x).getTerm().text();
for (int i = 0; i < fieldnames.length; i++) {
q2.add(new TermQuery(new Term(fieldnames[i], text)), false, false);
}
}
return q2;
}
return x;
}
}
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